It is unlikely that there would be two distinct endopedons in the same soil profile, as an endopedon defines a unique and continuous soil body. However, variations within an endopedon can occur due to factors like parent material, climate, or topography, which could create different horizons within the same endopedon.
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This is called a soil profile, which is made of one or more soil horizons. Each layer is unique to each soil type. Each horizon can range in depth from a few centimeters to several meters. Soil scientists observe and describe the profiles and horizons to classify and interpret the soil for various uses.
The A horizon is the topsoil layer in a soil profile, characterized by high organic matter content and dark color due to decomposition of plant material. It is the layer where most plant roots and soil organisms are found, making it important for nutrient cycling and plant growth.
The side of a pedon is called a "pedal surface." This is the surface that faces the observer when looking at a soil profile.
One possible cause of soil heaving up and tilting a sidewalk is frost heave. When water in the soil freezes and expands, it can push the soil and anything above it, such as a sidewalk, upwards. This can result in the sidewalk being raised and tilted.
Elluviation is the process by which water moves minerals or organic material from one soil horizon to another within the soil profile. This movement helps in the accumulation of distinct layers of minerals or organic material in different horizons, which contributes to the development of the soil profile.